MOC70P1 Equivalent & Substitute Parts

Part Overview

The MOC70P1 is an optical sensor manufactured by onsemi, designed as a through-beam phototransistor with slotted configuration and PC pin mounting. This component operates with a 0.200" (5.08mm) sensing distance and is classified as an unamplified optical sensor. The MOC70P1 is currently listed as obsolete, making identification of functionally equivalent alternatives necessary for ongoing system support and new design implementations where through-beam optical sensing is required.

Substiute Parts

MOC70P1

onsemiIn Stock: 761MOC70P1 Datasheet

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LTH-301A

Lite-On Inc.In Stock: 926LTH-301A Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of the MOC70P1 is determined by the following critical parameters:

• Sensing Method: Through-beam optical sensing capability is mandatory
• Output Configuration: Phototransistor output or equivalent detection mechanism
• Sensing Distance: Nominal range of 0.200" to 0.205" (5.08mm to 5.2mm)
• Voltage Rating: Collector-emitter breakdown voltage of 30 V or greater
• Mounting Configuration: Through-hole mounting with PC pin connectivity and slotted package design
• Type Classification: Unamplified sensor operation

The LTH-301A from Lite-On Inc. meets these substitution criteria as an active, through-beam optical sensor module with compatible sensing distance, voltage rating, mounting type, and PC pin configuration.

Parameter Comparison

Engineering Selection Recommendations

The LTH-301A serves as a functional equivalent for MOC70P1 applications based on the following engineering criteria:

Product Status: The LTH-301A maintains active production status with current inventory availability, whereas the MOC70P1 is obsolete. This ensures long-term supply chain viability for new designs and ongoing system support.

Compliance and Certifications: The LTH-301A is RoHS3 compliant, meeting current environmental and regulatory standards. Both components share identical ECCN classification (EAR99) and moisture sensitivity level (MSL 1 - Unlimited), ensuring equivalent handling and export compliance requirements.

Electrical Compatibility: Both sensors maintain 30 V collector-emitter breakdown voltage ratings and through-beam sensing methodology. The sensing distance differential of 0.005" (0.12mm) falls within standard mechanical tolerance ranges for slotted optical sensor applications.

Temperature Operating Range Consideration: The MOC70P1 operates across -55°C to 100°C, while the LTH-301A operates across -25°C to 85°C. Applications requiring operation below -25°C or above 85°C must evaluate alternative substitutes or confirm that the LTH-301A temperature range is acceptable for the specific deployment environment.

Frequently Asked Questions (FAQ)

Q: Can the LTH-301A directly replace the MOC70P1 in existing PCB designs?

A: The LTH-301A is mechanically and electrically compatible with MOC70P1 footprints. Both components feature through-hole mounting with PC pins and slotted package configurations. Physical verification of slot width and pin spacing against your PCB design is recommended prior to implementation.

Q: What is the significance of the 0.005" (0.12mm) sensing distance difference?

A: The sensing distance differential between MOC70P1 (0.200") and LTH-301A (0.205") represents a 2.5% variance. This difference is within standard mechanical tolerances for slotted optical sensor applications and does not typically affect functional performance in through-beam detection circuits.

Q: Are there temperature-related limitations when substituting with the LTH-301A?

A: The LTH-301A operates within -25°C to 85°C, compared to the MOC70P1 range of -55°C to 100°C. If your application requires operation outside the LTH-301A temperature range, alternative substitutes must be evaluated or the design must be constrained to the LTH-301A operating envelope.

Q: What compliance advantages does the LTH-301A provide?

A: The LTH-301A is RoHS3 compliant, meeting current environmental regulations. Both components share identical MSL 1 classification and EAR99 export control status, ensuring equivalent regulatory and supply chain handling requirements.

Q: How do the current specifications compare between these sensors?

A: The MOC70P1 specifies maximum collector current (Ic) of 20 mA and forward current (If) of 50 mA. The LTH-301A specifies maximum collector current of 500 µA. Circuit designs must account for these current differences when selecting load resistors and signal conditioning components.